Initial commit: bootstrap

3 files changed, 48 insertions, 0 deletions

diff --git a/src/linker.ld b/src/linker.ld
new file mode 100644
index 0000000..f3482e9
--- /dev/null
+++ b/src/linker.ld
@@ -0,0 +1,34 @@
+ENTRY(_start)
+
+SECTIONS
+{
+    . = 0x8000;
+    __start = .;
+    .text :
+    {
+        KEEP(*(.text.boot))
+        *(.text)
+    }
+    . = ALIGN(4096);
+    .rodata :
+    {
+        *(.rodata)
+    }
+    . = ALIGN(4096);
+    .data :
+    {
+        *(.data)
+    }
+    . = ALIGN(4096);
+    __bss_start = .;
+    .bss :
+    {
+        bss = .;
+        *(.bss)
+    }
+    . = ALIGN(4096);
+    __bss_end = .;
+    __bss_size = __bss_end - __bss_start;
+    __end = .;
+}
+
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..1ce2dd1
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,3 @@
+void main(void) {
+    while(1);
+}
diff --git a/src/start.s b/src/start.s
new file mode 100644
index 0000000..0fd2a5f
--- /dev/null
+++ b/src/start.s
@@ -0,0 +1,11 @@
+.section ".text.boot"
+
+.global _start
+
+_start:
+    ldr r3, =main
+    blx r3
+
+halt:
+    wfe
+    b halt